Evidencing the impact of dementia

Alzheimer's Society gathers and generates evidence on the scale and impact of dementia across the UK. Our evidence deepens understanding of dementia to inform solutions.

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Our aim is to curate a robust, relevant and useable evidence base to deepen understanding of dementia and inform solutions that will drive change for people living with dementia now, and in the future.

Here is the collection of our evidence, which is continually evolving as our understanding and insights grow.

Our evidence base

Coral Bailey with one of her stamp collectors' books

Lived experience survey results 2025

This lived experience report, commissioned by Strategic Evidence at Alzheimer’s Society and delivered by Walnut Unlimited, explores the insights and experiences shared by people affected by dementia through our 2025 lived experience survey. 

The nation-wide survey aims to highlight where inequalities in experience exist and to draw comparisons to our 2024 survey. 

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Become a campaigner to help people affected by dementia today and in the future. 

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